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  1. Oldest fossils I have ever found as these Early Cambrian Trilobites are estimated to be half a billion years old! Still trying to wrap my head around that. lol Much thanks to the SoCal Paleo Society which organized this field trip back in 2021 out to the remote site in the Mojave Desert. Based on various ID help I got, these are mostly Bristolia Bristolensis, Bristolia Mojavensis, and some others are not ID'ed yet. These were small and around an inch or so in width but one member of our party found part of a much larger one further up the mountain. The ID sheets with examples were brought by the trip organizers to help with ID's. The Latham shale these Trilobites are found in is somewhat brittle and I used a putty knife to carefully pry apart layers to look for Trilobites without shattering them. Most survived the process. These are just trace fossils but have some pretty good detail surprisingly.
  2. Some examples of fossils found in the cliffs and boulders of Malibu Creek Canyon Narrows. Oyster Bed and Moon Snail and Turritella Shell Fossils. The species guess for the Oysters based on research is Ostrea (Pycnodonte) Howelli, but I am not sure. Probably Eocene period fossils. Maybe Miocene. Nice area of Malibu creek in the Santa Monica Mountains but difficult to access.
  3. Crinoids

    Unknown fossil id if possible

    I don't have much info on this as I am purchasing it from someone who has no info on it, is this bone? What bone could it be if it is bone? Unknown location and size other than photos. Sorry
  4. SharkySarah

    Shark tooth hill

    I was lucky enough to trade some matrix with another collected from the famous shark tooth hill. I’ve identified them to the best of my ability and would love to show them off and get any feedback. Scale is mm! Thank you in advance! I’ll be more than happy to take different angles! C. planus tooth Charcharhinus sp. tooth Cat shark or hound shark? Galeorhinus sp. Mustelus sp. Squalus occidentalis
  5. arationallens

    Bryozoa on worm shell?

    Found these hiking in Orange County, California after some rain yesterday, near some fossilized scallop shells. Maybe Bryozoa covering a shell? They seem very fragile. It looks like there are uniformly spaced holes along the edges, as if there were parts protruding outward originally, or maybe those are features of the Bryozoa.
  6. Hello! I have been fossil hunting for quite a bit now and this is my first ever (what appears to me at least) fossilized bone! I would love just a general direction on what kind of animal it could’ve been- I know this area is very well-known for marine fossils, so of course my first thought would be some find of fish bone? Or I could be totally wrong, and it could be a more recent mammal! Any insight is so much appreciated- all I want to do is expand my knowledge. Thank you!
  7. Found in Miocene period Monterey formation in Arroyo Seco canyon of Central California Coast Range. Trochita is an undescribed species known from this formation. Others are mostly Brachiopods (Discinisca lamellosa) which surprisingly is not extinct and still lives in some oceans, Scallops (Pectenidae), Venus Clams (Veneridae), Ark Shells (Anadara/Scapharca), and an unknown Moon Snail (Nacticidae). Most found in 2024, some in 2019. Added a few pics of the nice scenery in the canyon. Trochita specimen is noteworthy as being in good condition with surface detail and may get donated to the California Academy of Sciences collection.
  8. beckyj

    Help identify,

    20240325_140720240325_140722.heic20240325_140329.heic22.heic 20240325_140640.heic 20240325_140633.heic 20240325_140556.heic 20240325_140323.heic 20240325_140329.heic 20240325_140337.heic
  9. Some roadside Miocene fossils found in 2020 in Topanga Canyon formation in the Santa Monica Mountains of Southern California. Large Olive Snail, Clam, and probably Turritella temblorensis. Useful info on the area: https://www.topangahistoricalsociety.org/archive/document/138
  10. Just sharing some Fossil Brittle Stars from the Eocene era. Found in remote area of Upper Sespe Creek drainage of the Los Padres Mountains in Southern California. Fossil site location help credit to R. L. Squires 1994 paper on Macropaleontology of Eocene marine rocks, upper Sespe Creek area, Ventura County, southern California.
  11. Found some nice Miocene period fish fossils in 2020. They have been ID'ed as Xyne grex (Extinct Herring Relative) but other and larger fish species fossils as well as shark teeth have been found there too. There is some Great info on this site here!: https://www.nautiloid.net/fossils/sites/jalama/jalama.html
  12. Hi, appreciate any ID help on this one from Chivo Canyon in Southern California. About 4-5" in diameter found inside of a roughly 1 foot diameter rock. The area is known for Eocene and Oligocene period fossils. Guessing this may be a sponge, coral, or possibly echinoderm like a Sea Urchin. Stumped on the ID so far. Most of the other fossils in the canyon are mollusks and gastropods. Thanks! -Chris.
  13. Just posting some pics of some finds from Chivo Canyon from 2020 and 2024. Would really appreciate any ID inputs on the Unknown Fossils especially the roundish one with many circles in it. It was roughly 4-5" in diameter in the center of a roughly 1 foot diameter rock. Guessing Sponge, Coral, or may an Echinoderm like an Urchin. The Chivo Canyon area is known to have fossils from the Eocene, and Oligocene periods. There are also a couple other unknown fossils which could be bones but not sure. The Tower Snails or Turritellas are probably mostly Turritella Uvasana. I don't know what the other Gastropods are. Thanks in advance for any ID ideas! -Chris.
  14. Hello! My first post here. I was just wondering if anyone knew of specific locals in order to find ammonites or trilobites in California? I found the website below somewhat useful, and have googled some of the locals on this area that have slightly pinpointed more specific areas, but I do know that sometimes fossils are only present on one part of one exposed cliff, and whatnot, and if I am going to go through the middle of nowhere, I don't want to not see fossils. http://www.fossilspot.com/STATES/CA.HTM Anyways, I haven't quite chosen my road trip route yet, but I will start in Calexico, CA and end in San Francisco, CA. I will likely go to the Chocolate Mountains, up to Blythe, CA, then across the Mojave to Bakersfield, CA (passing by the Trilobite Wilderness), then through the Carrizo Plains, and then up to Pinnacles NP, and then hopefully end up in San Francisco. If anyone knows a spot that isn't too inaccessible (I will have a 4WD), please let me know! Thank you.
  15. Hi All! I'm currently saving up to pursue my PhD in Archaeology (focus on pre-colonial N. America, Pre-Bronze Age Aegean, and Human Evolution) and am an avid rock and fossil collector! Living in NYC, I mostly hunt with my partner in NJ, but am originally from the California coast and often make trips back to the golden coast. Very interested in both collectible and "observation only" in-situ finds. Long-time lurker of the forum, but finally decided to join in on the discussions! Thanks everyone!
  16. While the Megalodon tooth seems to exist as THE find for many fossil hunters and/or amateur marine paleontologists alike (and rightly so!) it's never been my own personal "holy grail." However. My partner, who graciously tags along and searches with me whenever I drag him out on hunts often hours (or even days) of driving away, is absolutely enamored by the idea of finding one of these guys. I've heard many good things about Ernst Quarries/Sharktooth Hill and the private land surrounding it in Kern County, but I've also heard incredible things about Florida creek hunting - mostly Peace River and some, unfortunately, Top-Secret spots. We luckily have the opportunity right now to go on one (or both if we play our (credit) cards right) of these trips and was hoping those more experienced in the culture of "Meg Madness" would be able to provide any advice, pointers, opinions, comments, concerns, etc.?
  17. James Sable

    Is it coprolite?

    Thank you in advance for your feedback! This “rock” was found in Calaveras County California in a creek bed near an area of the Mokelumne River watershed. An exposed deposit of fossils was found a few years back in this area of the county. We have lots of exposed shale formations in the area. The pictures all show the “rock” trying tell me it’s a coprolite on the left, next to a coprolite from unknown origin I purchased in a rock shop on the right. The other pictures are the surface of the “rock” I would like to know more about. The last few pictures are after it’s wet. It weighs 4lbs and is about 8” diameter x 4” thick.
  18. Pigeon

    ID help

    Hi, Any ideas as to what this kind of fossils either of these are ? They are from near Sites, California. I'm not quite sure the age, but based on the age of mudstones in the area, it should be late Jurassic to Cretaceous. Note this is form a bore hole (not surface collected), but I am not positive of depth. Thank you in advance.
  19. DRJENN

    Can You Help Me ID?

    I was agate hunting in Crescent City, CA, at Pebble Beach. I found this tooth. I've been an avid "fossiler" for decades. My usual places are Ponte Vedra Beach, Florida, and the Peace River in Florida. I've found numerous types of teeth, Glyptodont scutes, etc. This is my first find in CA. I can't identify the tooth. Seal? Dolphin? Human? I am curious if the root has been agatized to some degree. Any help in identifying what animal this tooth came from is greatly appreciated.
  20. Good evening, My name is Cal and I am new to The Fossil Forum. I have been collecting fossil and mineral specimens since I was a kid. I'm from California, but make my way across a lot of the west to collect in the field. By no means am I an expert, and most of my learning has been done via books, the internet, and talking to others who are far more knowledgeable. I am looking forward to learning from everyone and seeing your collections! -Cal
  21. Hello to all. I would appreciate some help identifying if this is a fossil and what it may be. I found it in a canyon in San Diego and plan on taking it to our local natural history museum if it turns out that is something worth taking. Thank you in advance for your help.
  22. sonarcop

    Dino Egg or Concretion?

    I have received conflicting responses from numerous geologists on my find. Even had one geologist remark that my find was a fake, which I can assure is not. Found in dry riverbed off mountain road in Portola Valley, California. Any advice or suggestions on identification is truly appreciated.
  23. Hi all, a family member found this 30 years ago near Anza Borrego in southern CA. Looks a lot like juvenile tortoises I've seen in the area. I'm aware that fossil testudines are known from the area, but 1) is this one?, and 2), is a family, genus or species level identification possible from this partial specimen? Thanks. (The ruler is in inches. The specimen itself is about 9cm x 7cm.)
  24. hsug1747

    Fish from Santa Barbara

    Hi everyone, this is a fish I found a few years ago in Santa Barbara. If anyone could help with ID, or provide any resources on fossils in the area it would be greatly appreciated. The fossil is in very soft shale, measures just over 3 inches head to tail, had lots of bivalve and gastropod fossils nearby. I can provide additional pics/info if necessary. Thanks!
  25. Went out on my first time hunting fossil fish and found this! Any tips for identifying fishes? I’m new to this and any help is appreciated!
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